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Compatible SFP Modules for Mikrotik CRS125-24G-1S-IN & CRS125-24G-1S-RM

Mikrotik CRS125-24G-1S series cloud router switch is available in CRS125-24G-1S-IN and CRS125-24G-1S-RM two models. It combines the best features of a fully functional router and a Layer 3 switch, is powered by the familiar RouterOS. As we know, these two models switch both have one SFP port. Then, what SFP modules can you choose for your switch? This blog will give some choices.

Overview for CRS125-24G-1S-IN and CRS125-24G-1S-RM Switch
As show in the figure below, both CRS125-24G-1S-IN and CRS125-24G-1S-RM switches have 24 RJ45 ports and 1 SFP port. One is a desktop type, and the other is a 1U rackmount type. You can according to your specific needs to choose the right one.

CRS125-24G-1S-IN CRS125-24G-1S-RM

Detailed specifications for CRS125-24G-1S and CRS125-24G-1S-RM are listed in the following table:

CPU Qualcomm Atheros AR9344 600 MHz
Memory 128MB
Ethernet 24x 10/100/1000 Mbit/s Gigabit Ethernet with Auto-MDI/X
Expansion microUSB port
Storage 128MB Onboard NAND with multiple OS partition support
Serial port One RJ45 serial port
Extras Reset switch; beeper; voltage and temperature monitoring, touchscreen LCD
Power options 8-28V, 24V 0.8A PSU included
Case dimensions 285x145x45mm
Temperature -35C to +65C tested
OS MikroTik RouterOS v6, Level 5 license
Included CRS switch, power adapter, and USB OTG cable (for 4G dongle or USB drive)

User Guide for CRS125-24G-1S-IN and CRS125-24G-1S-RM Switch
The CRS125-24G-1S and CRS125-24G-1S-RM are preinstalled with RouterOS and are ready to use. Switch is compatible with RouterOS v6 and newer, if your switch comes preinstalled with an earlier version, please upgrade before using it. For CRS125-24G-1S and CRS125-24G-1S-RM: All the ports are switched. Both models can be accessed though the IP 192.168.88.1, username is admin and there is no password. Please connect with your web browser to this IP address to configure it.

Compatible SFP Modules for CRS125-24G-1S-IN & CRS125-24G-1S-RM Switch
According to Mikrotik cloud router switch guide, CRS125-24G-1S-IN and CRS125-24G-1S-RM switches are compatible with 1.25G SFP modules. SFP+ port supports only modules up to 10KM LR (long reach). FS.COM provides a full range of compatible 1.25G SFP modules at high quality and low price, which can work well in Mikrotik switches. 1000BASE-SX SFP modules are only sold at US$  6.00. Part of the products from FS that are compatible with this Mikrotik CRS125-24G-1S-IN and CRS125-24G-1S-RM switches are listed below for your reference.

FS P/N Description
SFP-GB-GE-T Generic Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver
SFP-GB-GE-T Generic Compatible 10/100/1000BASE-T SFP Copper RJ-45 100m Transceiver
SFP1G-SX-85 Generic Compatible 1000BASE-SX SFP 850nm 550m DOM Transceiver
SFP1G-SX-31 Generic Compatible 1000BASE-SX SFP 1310nm 2km DOM Transceiver
SFP-LX Generic Compatible 1000BASE-LX/LH SFP 1310nm 10km DOM Transceiver

Compatible Optical Transceivers for Cisco Catalyst 9500 Series Switches

According to a recent survey, over half (57%) of companies have already adopted the Internet of Things (IoT) technology. By 2019, that statistic is projected to reach 85% as the expectations for IoT to deliver value and innovation continue to grow. Many advocates are struggling to secure IoT devices. To lead the pack in the switches markets, Cisco recently announced the Catalyst 9500 Series switches, which are designed for security, IoT and the cloud. The switches will be the next generation of the most widely deployed switching platform. Here in this article will take you to understand more about Catalyst 9500 switches and which optical transceivers are compatible for it.

Cisco Catalyst 9500 Series Switches

Cisco Catalyst 9500 Switches – Built for Security, IoT, and Cloud

The Cisco catalyst 9500 series switches are the next generation of enterprise-class core and aggregation layer switches, which are part of the new Cisco catalyst 9000 family. These switches come with 4-core 2.4-GHz CPU, 16-GB DDR4 memory and 16-GB internal storage. The catalyst 9500 comes in three different varieties: Catalyst 9500-24Q, Catalyst 9500-12Q and Catalyst 9500-40X. They support 10G and 40G Gigabit Ethernet network connection. The most important feature is that these switches support the advanced routing and infrastructure services, such as MPLS L2/L3 VPNs and MVPN. And they are designed for full fabric-control with Cisco DNA and Software-Defined Access (SD-Access). Therefore, these switches deliver stellar performance and functionality and extend Cisco’s networking leadership with significant innovations in security, mobility, IoT and cloud.

Model Description Total QSFP or SFP+ Ports
Catalyst 9500-24Q Cisco catalyst 9500 series 24-port 40 Gigabit Ethernet with QSFP 24 QSFP/24 SFP+
Catalyst 9500-12Q Cisco catalyst 9500 series 12-port 40 Gigabit Ethernet with QSFP (C9500-12Q-E etc) 12 QSFP/12 SFP+
Catalyst 9500-40X Cisco catalyst 9500 series 40-port 10 Gigabit Ethernet with SFP+ 40 SFP+
Software-Defined Access for Cisco Catalyst 9500 Switches

The Cisco catalyst 9500 series switches form the foundational building block for Software-Defined Access. Software-Defined Access is the industry’s first intent-based networking solution for the Enterprise built on the principles of Cisco’s Digital Network Architecture (DNA). It is an open and extensible, software-driven architecture that accelerates and simplifies your enterprise network operations. The programmable architecture frees your IT staff from time-consuming, repetitive network configuration tasks. Compared catalyst 9500 to the older switches, it performs more benefits for customers:

Cisco Catalyst 9500 Software-Defined Access

  • Reduced cost and complexity with Cisco Software-Defined Access by automating policy, enabling fast service creation and providing complete visibility into the wired and wireless access networks.
  • Create better customer and employee experiences through higher performance and improved support for mobility and new apps.
  • Advanced end-to-end security to handle threats before, during and after attacks.
Compatible QSFP+ / SFP+ Transceivers for Cisco Catalyst 9500 Switches

According to Cisco 10/40 Gigabit Ethernet Transceiver Modules Compatibility Matrix, C9500-12Q, C9500-24Q and C9500-40X can support SFP-10G-ER, SFP-10G-ZR, SFP-10G-ER-S, SFP-10G-ZR-S, QSFP-40G-SR4, QSFP-40G-LR4, SFP-40G-SR4-S ect. All SFP+ and QSFP+ transceivers can be found in FS.COM. And all of these cost-effective compatible modules have been strictly tested to make sure 100% compatibility.

QSFP+ Transceivers
Transceiver Model Part ID Transceiver Description
QSFP-40G-SR4 36157 Cisco QSFP-40G-SR4 Compatible 40GBASE-SR4 QSFP+ 850nm 150m MTP/MPO DOM Transceiver, $ 49.00
QSFP-40G-CSR4 36165 Cisco QSFP-40G-CSR4 Compatible 40GBASE-CSR4 QSFP+ 850nm 400m MTP/MPO DOM Transceiver, $ 59.00
QSFP-40G-SR4-S 36143 Cisco QSFP-40G-SR4-S Compatible 40GBASE-SR4 QSFP+ 850nm 150m MTP/MPO DOM Transceiver, $ 49.00
QSFP-40G-LR4 36170 Cisco QSFP-40G-LR4 Compatible 40GBASE-LR4 and OTU3 QSFP+ 1310nm 10km LC DOM Transceiver, $ 340.00
QSFP-40G-LR4-S 36153 Cisco QSFP-40G-LR4-S Compatible 40GBASE-LR4 QSFP+ 1310nm 10km LC DOM Transceiver, $ 340.00
QSFP-40G-ER4 36173 Cisco QSFP-40G-ER4 Compatible 40GBASE-ER4 and OTU3 QSFP+ 1310nm 40km LC DOM Transceiver, $ 1,500.00
QSFP-40G-SR-BD 48722 Cisco QSFP-40G-SR-BD Compatible 40GBASE-SR Bi-Directional Duplex LC Transceiver, $ 300.00
WSP-Q40GLR4L
(except C9500-40X )
36172 Cisco WSP-Q40GLR4L Compatible 40GBASE-LR4L QSFP+ 1310nm 2km LC DOM Transceiver, $ 340.00
SFP+ Transceivers
Transceiver Model Part ID Transceiver Description
SFP-10G-SR 11552 Cisco SFP-10G-SR Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver, $ 16.00
SFP-10G-SR-S 36433 Cisco SFP-10G-SR-S Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver, $ 16.00
SFP-10G-LR 11555 Cisco SFP-10G-LR Compatible 10GBASE-LR SFP+ 1310nm 10km DOM Transceiver,$ 34.00
SFP-10G-LR-S 36434 Cisco SFP-10G-LR-S Compatible 10GBASE-LR SFP+ 1310nm 10km DOM Transceive, $ 34.00
SFP-10G-LRM
(except C9500-24Q / C9500-12Q )
11556 Cisco SFP-10G-LRM Compatible 10GBASE-LRM SFP+ 1310nm 220m DOM Transceiver, $ 34.00
SFP-10G-ER 11557 Cisco SFP-10G-ER Compatible 10GBASE-ER SFP+ 1550nm 40km DOM Transceiver, $ 149.00
SFP-10G-ER-S 36435 Cisco SFP-10G-ER-S Compatible 10GBASE-ER SFP+ 1550nm 40km DOM Transceiver, $ 149.00
SFP-10G-ZR 11582 Cisco SFP-10G-ZR Compatible 10GBASE-ZR/ZW and OTU2e SFP+ 1550nm 80km DOM Transceiver,$ 299.00
SFP-10G-ZR-S 36436 Cisco SFP-10G-ZR-S Compatible 10GBASE-ZR/ZW and OTU2e SFP+ 1550nm 80km DOM Transceiver,$ 299.00

Note: For C9500-24Q / C9500-12Q, the Transceivers should be used with CVR-QSFP-SFP10G.

Conclusion

The catalyst 9500 switches solve some persistent challenges of enterprise networks by utilizing platform innovations built around four key areas: security, Internet of Things (IoT) convergence, mobility and cloud readiness. There is no doubt that catalyst 9500 is leading us to a new era of faster and securer network. And if you need any transceiver for Cisco catalyst 9500 series, please contact us via www.fs.com. All the products offered by FS.COM are tested before shipping to ensure superior quality.

Data Centers: Say Hello to White Box Switch

Today, nearly all mainstream organizations use traditional (integrated) switches from vendors like Cisco, HP, Arista and Juniper. However, hyperscale folks such as Google, Amazon and Facebook are taking the lead to use white box switch in the portion of their networks, operating the system in a different manner. So what is the magic behind that? Are these OTTs the only customers of white box switch? You may find some hints in this article.

White Box Switch

What Makes White Box Switch Special?
White box switches consists of generic and inexpensive hardware and a preload network operating system (NOS) that can be purchased and installed separately. Often the hardware and software come from different vendors. This is in contrast to a traditional switch that comes as one package including the hardware and the software. For example, when you buy a catalyst switch from Cisco, you are obliged to use Cisco IOS as its operating system. But with white box switch, you are allowed to buy hardware and software separately.

Except offering increased software flexibility/programmability and reduced vendor lock-in, white box switch enables users to have multiple choices on hardware, network operating system (NOS) and applications. The impact of which is profound when it comes to network orchestration, routing, automation, monitoring and network overlay.
White Box Switch NOS

What About the Target Market of White Box Switch?
White box switch is initially designed for data centers. Companies that operating mega data centers are especially prefer white box switch for at least two reasons: these companies generally demand for massive deployment of switches and the port density of each switch needs to be high. White boxes are cheaper while offering high-density ports, hence proven to be an optimal alternative. On the other hand, these large-scale companies also value the flexibility and openness of the switch platform, besides CAPEX savings. As an open platform to offer broader flexibility, white box switch free them from traditional L2/L3 protocols, enabling more possibilities to develop and support any SDN based networking.

So, are these large-scale OTTs the only target market for the white box switch? Definitely No!

Any small or medium-sized cloud based providers, or data center of service providers can consider deploy white box switches in data centers, concerning the cost savings and enhanced flexibilities compared with traditional switches. Also because of the familiar IT tools/ commands their technicians are used to. However, white box switches are not yet ready to offer all features and services that a service provider needs to offer, and not yet for deployment in non data center environments.

The Potential of White Box Switch
Based on an open platform, white box switch offers greater possibilities for innovation when compared with traditional networking gears. As the number of vendors that specialized in developing software began to soar, customers can choose from a range of software solutions with added functionality and reduced price.

White box switch becomes even popular in this age of SDN. In traditional switches, software and hardware are integrated into one package, which limits the network innovation greatly. SDN is here to decouple the software from hardware, helping speed shifts in networking. It resembles the standpoint of white box switching. Moreover, the advert of SDN also drives white box forward: when combined with SDN-centric designs, these deployments have resulted in dramatic improvements in automation, operational simplification, and faster innovation. These benefits are now being realized by enterprises of all sizes via commercially available SDN solutions.

Conclusion
Despite the fact that white box switches cannot be applied in non-data center environment for the time being, they are meeting their target market requirements successfully. The potential of white box switch cannot easily be underestimate, it is an ideal alternative that worth to be seriously considered at least for data center applications.

Dual-Fiber or Single-Fiber CWDM Mux Demux for Higher Capacity Need?

What would you do if your network capacity can not meet your requirement? Will you put more fibers or update your system? In fact, these two methods are not very recommendable. Why? As your fiber cabling infrastructure is limited for adding fibers and high cost is required for upgrading system, these two methods are unworkable or too expensive. Under this condition, using a pair of CWDM Mux Demux to build a CWDM system with higher capacity is highly recommended. The CWDM Mux Demux is regarded as a key component for a CWDM system, as shown below. It can be simply divided into two types, dual-fiber and single-fiber CWDM Mux Demux. To meet the higher capacity need of your system, this post will mainly introduce the basic knowledge of the dual-fiber and single-fiber CWDM Mux Demux and guide you find a suitable fiber optic Mux Demux for building your CWDM system.

CWDM system

Dual-Fiber CWDM Mux Demux

Dual-Fiber CWDM Mux Demux is a passive device multiplexing and demultiplexing the wavelengths for expanding network capacity, which must work in pairs for bidirectional transmission over dual fiber. It enables up to 18 channels for transmitting and receiving 18 kinds of signals, with the wavelengths from 1270 nm to 1610 nm. The CWDM transceiver inserted into the fiber optic Mux port should have the same wavelength as that of Mux port to finish the signal transmission. For instance, the two reliable 4 channel CWDM Mux Demux showed below use four wavelengths, 1510 nm, 1530 nm, 1550 nm and 1570 nm, their corresponding CWDM transceivers also features the same wavelengths.

Dual Fiber CWDM Mux Demux

When the connection above works, the left 4 channel dual-fiber CWDM Mux Demux uses 1510 nm, 1530 nm, 1550 nm and 1570 nm for transmitting 4 kinds of signals through the first fiber, while the right 4 channel dual-fiber CWDM Mux Demux features 1510 nm, 1530 nm, 1550 nm and 1570 nm for receiving the signals. On the other hand, the transmission from the right to left use the same wavelengths to carry another 4 signals through the second fiber, finally achieving the bidirectional signal transmission.

Single-Fiber CWDM Mux Demux

Single-fiber CWDM Mux Demux should be also used in pairs. One multiplexes the several signals, transmits them through a single fiber together, while another one at the opposite side of the fiber demultiplexes the integrated signals. Considering that the single-fiber CWDM Mux Demux transmitting and receiving the integrated signals through the same fiber, the wavelengths for RX and TX of the same port on the Single-fiber CWDM Mux Demux should be different. Hence, if the 4 channel single-fiber CWDM Mux Demux is used for CWDM system, 8 wavelengths are required, the twice time as that of the dual-fiber one.

Single Fiber CWDM Mux Demux

The working principle of single-fiber CWDM Mux Demux is more complicated, compared to the dual-fiber one. As shown in the figure above, the transmission from the left to right uses 1470 nm, 1510 nm, 1550 nm and 1590 nm to multiplex the signals, transmit them through the single fiber, and using the same four wavelengths to demultiplex the signals, while the opposite transmission carries signals with 1490 nm, 1530 nm, 1570 nm and 1610 nm over the same fiber. As for the wavelength of the transceiver, it should use the same wavelength as TX of the port on the CWDM Mux Demux. For example, when the port of a single-fiber CWDM Mux Demux has 1470 nm for TX and 1490 nm for RX, then a 1470nm CWDM transceiver should be inserted.

Dual-Fiber vs. Single-Fiber CWDM Mux Demux

We always consider whether an item is worth buying according to its performance and cost. In view of the performance, the single-fiber CWDM Mux Demux can carry signals through only one fiber supporting fast speed transmission and saving the fiber resource, while the dual-fiber one requires two fibers for transmission with a higher reliability. Besides, using single-fiber CWDM Mux Demux can be easier to install. In view of the cost, the single-fiber CWDM Mux Demux is much more expensive than the dual-fiber. And the simplex fiber cable also costs higher than duplex fiber cable. Thereby, the whole cost for building single-fiber CWDM system must be much more higher. Like the two sides of the same coin, both the dual-fiber and single-fiber CWDM Mux Demux have their own advantages and disadvantages. Which one you should choose just depends on your system needs and your budget for building the CWDM system.

Pre-terminated Copper Cables: Interconnect & Cross Connect Solution

Copper cables are regarded as the optimal solution for data center, which provides significant benefits in the respect of capital expenditures, operating expenditures, performance, and reliability. Pre-terminated copper cable assemblies, emerging as a new copper cabling option for network architectures such as MoR (Middle of Row) or EoR (End of Row), are recommended for interconnect and cross-connect applications in data center.

What Is Pre-terminated Copper Cable Assemblies ?

Pre-terminated copper cable assemblies consisting of pre-terminated copper trunks and copper patch cords (usually terminated with RJ45 connector), are ideal for data center applications which  require high-efficient deployment. Being factory pre-terminated and strictly tested, the pre-terminated copper cable assemblies simplify network installation and maintenance, saving users much time and energy. Moreover, they offer more flexibility to be disassembled and repurposed to accommodate MACs (moves, adds and changes), facilitating management when rapid network growth and migration required.

data-center-copper-cabling

Commonly used in point-to-point connections in data centers, pre-terminated copper trunk cables enable reliable connectivity between server and switch cabinets. While copper patch cords are used to connect panels to switches and servers. Moreover, intelligent patch cords are available to monitor port status.

Tips: various termination types are available for the pre-terminated trunks, such as jack-to-jack, jack-to-plug, plug-to-plug, cassette-to-cassette, and so on. So, your choice should base on the layout of the data center or telecommunications room, and the design philosophy employed.

How to Use Pre-terminated Copper Cable Assemblies?

Pre-terminated copper cable assemblies can be used in data center for backbone or intra-rack cable connectivity. This section illustrates the interconnect and cross-connect connectivity using pre-terminated copper cables in universal data center cabling applications.

Interconnect

For general data center cabling, copper trunk cables are used to make a permanent link between patch panels on each ends—one end is in a switch/network cabinet, and the other end is in a server/storage cabinet. And patch cords are usually used to interconnect the active equipment such as switches, servers, etc.

interconnect

Cross Connect

In cross-connect cabling configuration, an individual patching area (often including two or more adjacent patch panels) is usually added between the switch/network cabinet and server/storage cabinet. Thus, two copper trunk cables are used as two permanent links between them. One runs from the switch/network cabinet panel to cross-connect panel, and the other one runs from cross connect panel to the panel in the server/storage cabinet. Copper patch cords are used to interconnect the active equipment and patch panels at the switch/network cabinet, cross-connect cabinet, and server/storage cabinet.

cross-connect

FS.COM Pre-terminated Copper Cable Assemblies Solution

FS.COM offers a wide range of configurable pre-terminated copper cable assemblies and patch panels to meet the demand for faster deployment and guaranteed performance in data center copper cabling, help saving time and money.

Pre-terminated Copper Cable Assemblies Pre-terminated Copper Trunk Cable
Copper Patch Cords Cat5e Patch Cord
Cat6 Patch Cord
Ca6a Patch Cord
Cat7 Patch Cord
Modular Patch Panel Cat5e Patch Panels
Cat6 Patch Panels
Other Accessories Cat5e Connector/Plugs
Cat6 Connector/Plugs
Cat7 Keystone Jacks & Plugs
Conclusion

Pre-terminated copper cable assemblies offer an ideal solution for data center interconnection and cross connect applications. All the pre-terminated copper cables, patch panels and related accessories presented in the above chart are available in FS.COM. For more details, please visit www.fs.com for contact us directly via sales@fs.com.